These attractive and very varied “Mushrooms” are rather more like anemones than a coral. They colonise rocky surfaces and can completely cover a rock to the extent it is not apparent what is beneath them until they retract for any reason. Like the true anemones these animals cultivate zooxanthellae within their tissues, and they also ingest captured food particles via the oral disc at their centre. They will often be entirely successful from taking enough food out of the water after fish have attacked offerings and caused some particles to float away into suspension. If in doubt the hobbyist can provide some small food particles directly to them, taking care not to pollute the aquarium by allowing any excess going to waste.